Name___________________
DSPM 0800 HOMEWORK (ASSIGNMENT 9, SECTION 10-4)
Solve the following problems using systems of equations:
1. Emily Harrington made two 1-year investments totaling $7,000 at interest rates of 4%
and 7%. If she received $415 in return, how much money was invested at each rate?
$_______________ was invested at 4%.
$_______________ was invested at 7%.
2. An automotive service station purchased 25 maps of Ohio and 8 maps of Alaska at a
total cost of $65.55. Later the station purchased 20 maps of Ohio and 5 maps of Alaska
for $49.50. Find the cost of each map.
A map of Ohio cost $________________.
A map of Alaska cost $______________.
